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Consider a red flame color produced by excited lithium with a wavelength of 671 nm. What is the mass equivalent of 1 mol of photons of this wavelength?

I can get as far as Js of E

Can't seem to find equation to turn Js into mols, or photons into mols, for Js into photons.

I'm lost

  • chemistry -

    E=h*c/lambda Solve for E, the energy in one photon, then multily it by avagradros number.

  • chemistry -

    ahh, of course, thank you.

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